GM didn't make a 15x10 "Corvette style Rally" widest they made was 8" and that would be an AZ code wheel. I have/had them on all 4 corners of my Bu. The AZ code wheel is a 4" backspace and only made from 1969-1982. I ran a set in the rear with a 275/60/15 Drag Radial and a set in front with 235/60/15's and they fit perfectly. GM made various Backspaced rally's see link below.........The Letter B after the size is the Backspace.............Wheel Vintiques makes all kinds of re-pro rims including the rally. Be aware that their re-pro rims are heavier than the GM originals, I bought a set of 15x6 "corvette rally's" from them and they weighed 4 lbs each heavier!
Sorry, probably been posted before but I don't have the time to search and read. A set of wheels with the code: K-1-3 4 (valve stem) 26 FW I know they're 15 x 7s but I get confused with the left hand code. TIA!
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